Re: Iphone 4/4s Lighted charger not working - not lighting up anymore.

If the lighted portion has stopped functioning, you can have the unit reviewed under the 1 year manufacturer warranty. Were you given the receipt with the cord, or can you request the receipt from the person that gave it to you? If they do not have it they can call your local Best Buy location, and the store personel may be able to look it up using their name, phone #, or the card they used for payment.

Once you have the receipt info, take that and the cord into your local Best Buy to the Geek Squad desk, and they should be able to get you exchanged out.